The concept of brake cooling ducting is not new and has been used on racecars for quite some time now. The benefits include more consistent brake performance resulting from lower rotor, pad, caliper and brake fluid temperatures. The end results are longer lasting brake hardware, reduced brake fade and more confident and consistent pedal feel.

We would like to take this opportunity and see how many people would be interested in a kit like this and also answer any questions or concerns in this thread. Production numbers of these kits will be EXTREMELY limited, so please - only serious inquiries.

Would be interested if truly no rub at/near full lock; otherwise nice piece!

I own this kit and run Hoosier A6 slicks on 10" rims. There is rubbing at full lock, how much depends on your set up, etc. HPC doesnt advertise no rubbing. Contact Sonic MS and get tire clearance data straight from them
This is a race set up folks.

Thx, actually want to keep my stock zcp wheels/tire sizes. Figured that brake cooling ducts, street/track pads, and fluid/lines would be good enough for occasional track use and much cheaper than a BBK.

Quote:

Originally Posted by smpl3

I own this kit and run Hoosier A6 slicks on 10" rims. There is rubbing at full lock, how much depends on your set up, etc. HPC doesnt advertise no rubbing. Contact Sonic MS and get tire clearance data straight from them
This is a race set up folks.

Nice set up!
Do you think there might be tire rub issues on the ducting especially with a 10"/275 set up?

Quote:

Originally Posted by dex37

Looks really great. It looks quite well built. It comes pre-shaped so you probably won't have any rubbing at full lock, right?

Unfortunately, there is rubbing at full lock; there are compromises here. BMW did not design their car to accomodate these parts HPC made. This is a RACE part not for the timid and not designed for characteristics of street driving (doing u turns at stop lights...). With a 10" rim on a 265 Michelin PSC tire there is plenty of turning radius for competitive racing (about 70% of steering is left) with the duct installed. There is massive rubbing on a Porsche GT3 RSR straight from the Weissach factory. At Flying Lizard MS the front rims needed to be modified in order to gain a reasonable and acceptable amount of steering radius.

There are clients who have this kit installed (Kris Von Sydow at VS MS) who use steering locks to limit steering radius.

HPC potentially can fabricate a Kevlar duct with other special materials, it will flex and distort and will not be harmed by the rubber tire or rim. HPC is actively looking into guaranteeing the kevlar wheel duct for those that have issues and providing free replacements. However, this will undoubtedly add on to the cost.

People running 19's and lowered more than 1.8" with camber will also rub massively at full lock.

Thx, actually want to keep my stock zcp wheels/tire sizes. Figured that brake cooling ducts, street/track pads, and fluid/lines would be good enough for occasional track use and much cheaper than a BBK.

Good path in lieu of a BBK!

Wheel ducts clear the stock rim and tire at full lock no problem. I'll get a measurment on my race set up, get hpc to post pics on their facebook page.
My guess is about 3/8 less steering

Absolutely interested on clearing on the volks (TE 37sl)as well. 18" x 9.5 (265/35 F) and 18" x 10.5 (285/35 R) on kw comps, lowered -2.5 to -3 camber. Had my mind set on the cantrells, but if price is reasonable, would love this setup. Also any issues with the narrow, sharp tight turn before the hose-backing plate(where the CF mid-piece connects to the hose) area reducing air-flow going to the hose attached to the backing plate?

Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."